Vaccine poses a hazard to all who receive it. Sometimes the vaccinated, in
the case of live polio vaccine, pose a risk to those around them for up to
a month or 6 weeks in that live polio virus is 'shed'. Vaccines sensitize
recipients to disease, often the vary disease for which they are vaccinated. The
following quote is from: http://www.whale.to/a/obomsawin.html
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It is often alleged that the unvaccinated are so much inflammable material in the midst of the
community, and that smallpox begins among them and gathers force so that it sweeps even the
vaccinated before it. Inquiry into the facts has shown that at Cologne in 1870 the first
unvaccinated person attacked by smallpox was the 174th in order of time, at Bonn the same
year the 42d, and at Liegnitz in 1871 the 225th.